The reason Linux only grew with the Steam Deck is because an operating system only grows if it's preinstalled on a popular device. Average users do not install their own OS. If you were actually in tune with average users, you would know this. It has nothing to do with Linux users making jokes amongst themselves.
If you want it to be truly multiplat and want to control it, you either need a self-hosted web service (simple as a basic wiki or as complex as nextcloud) or just sync plaintext markdown files and use an editor on each platform. Anything else and you'll just eventually end up in the same situation.
What you're probably referring to is running a virtual machine with VFIO passthrough. I hate to be that guy, but this is one of those "if you have to ask for help, you probably shouldn't do it" kind of situations. It's complicated and easy to mess up, requires a decent amount of knowledge of both Linux and Windows, and every situation is unique. There's no cookie-cutter way to set it all up.
But if you're willing to buckle down and learn anyways, the best way would be to do it from scratch. This is the best documentation I'm aware of on the subject, but it's tailored heavily for Arch Linux, a rather advanced distro to use.
Shared email Blocklists are the norm, not the exception
Shared blocklists in IT are managed by industry professionals for the purpose of safety from malicious activity and there are vetted processes for being removed from days lists. False positives happen, but you aren't hung out to dry if you get hit, you just go through the process and clear your name.
Most of this "Fediblock" nonsense is several orders of magnitude less reliable, and filled with toxic people pursing personal grudges. There's no process to clear your name, and I've personally watched multiple admins and their entire communities be publicly mocked and told they "don't owe you anything" for merely asking why they were blocked, let alone how to remedy the situation.
These are not remotely equivalent and anybody who trusts them is a fool. The Fediverse has a serious problem with vile, bitter people who would not be out of place running an HOA. If we are going to emulate the blocklists common in IT, we need professionals in charge of it, not nosy busybodies.
Bad taste is when people draw attention away from the actual issues and towards making sure the language is sufficiently inoffensive and mild enough for their delicate sensibilities. This is one of the worst traits that the Fediverse has developed.
This is already the case with your motherboard firmware, which fTPM is a part of. You are correct in that you have no real way to handle malware in it except throw it away. This doesn't change in any way if you get rid of TPM.
Anti-user features which are enabled by games and programs that were already anti-user before this. Hardly worth getting upset about, nothing has really changed. You already should have been avoiding them, because they were already anti-user.
They don't; there was an internal tech demo that never went anywhere but was spread around online a few months ago with a bunch of misinformation that Microsoft was preparing to fight the Steam Deck head on.
Why does everybody seem to think that userspace attestation is the only use for the TPM? The primary use is for data to be encrypted at rest but decrypted at boot as long as certain flags aren't tripped. TPM is great for the security of your data if you know how to set it up.
Valve is never going to require TPM attestation to use Steam, that's just silly. Anti-cheat companies might, but my suggestion there is to just not play games that bundle malware.
I strongly dislike ingame teleporting and pause menu quick travel. I'd much rather the game have more ways for me to get to where I'm going than simply materializing wherever I want to be.
Let the travel itself be part of the game instead of just a way to link the "real" parts of the game together. Make it fun and fast to move around, add unlockable shortcuts, add more in-universe traveling options. Let me get to where I'm going myself instead of doing it for me, and make it fun to do so.
Especially in open world games, not only is this the most true, but they're the worst offenders. Literally what is the point of making an open world and then letting people skip it? You see everything once and that's it. If you make an open world full of opportunities to wander and explore, and then players want to avoid it as much as possible via teleportation, you have failed as a designer.
Most Linux distros are more alike than different. They'll use different package managers, have different sets of software available, have different default settings for some stuff, but at the end of the day, Linux is Linux. Once you know enough, the distro is almost meaningless in terms of what you're capable of. You can do almost anything on any distro with the right knowledge and a bit of effort. It mostly becomes about the effort at that point.
Skills you learn on one will be 98% transferrable to another. That's why everybody says to just get Red Hat certifications; not because Red Hat has a monopoly, but because their certification process is fantastic, respected and accepted almost anywhere regardless of what they actually run. As you've seen, almost every answer you got was completely different on what they actually run in production.
The only standout differences are the newish trend of immutable distros (openSUSE ALP/Aeon, Fedora Kinoite/Silver blue, etc) and NixOS, which is also immutable but its own beast entirely. These have some new considerations separate from the rest, especially NixOS. But they're still relatively fresh on the scene, so there's no rush to learn about them just yet.
This is a completely valid option and one that more people should consider. You don't have to selfhosted everything, even if you can. I actually prefer to support existing instances of stuff in a lot of cases.
I use https://disroot.org for email and cloud, and I'm more than happy to kick them a hundred bucks a year to help support a community. Same with https://fosstodon.org for Mastodon. I'm fully capable of self-hosting these things, but instead I actively choose to support them instead so that their services can be extended to more than just myself. I chose those two because they send excess funds upstream to FOSS projects. I'm proud to rep those domains.
AMD GPUs are fantastic on Linux. I'm running an MSI 6800XT and the only flaw is the the RGB lighting isn't properly exposed so I can't turn it off. Everything else just works and I've never had to give it a single thought since buying it. I just put it in and started playing my games.
The reason Linux only grew with the Steam Deck is because an operating system only grows if it's preinstalled on a popular device. Average users do not install their own OS. If you were actually in tune with average users, you would know this. It has nothing to do with Linux users making jokes amongst themselves.